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Finding the Fourth Proportional to 75,917.72, 104,810.18 and 50,458.61

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Solution

The fourth proportional to 75,917.72, 104,810.18 and 50,458.61 is: 69,661.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,917.72 : 104,810.18 = 50,458.61 : x
  2. Step 2: Convert to fraction form
    75,917.72/104,810.18 = 50,458.61/x
  3. Step 3: Cross multiply
    75,917.72x = 104,810.18 × 50,458.61
  4. Step 4: Simplify right side
    75,917.72x = 5,288,576,006.38
  5. Step 5: Solve for x
    x = 5,288,576,006.38/75,917.72
  6. Step 6: Final answer
    x = 69,661.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.